"This is what I worked my whole life for," Amaya told MLSSoccer.com at the draft in Chicago. "This is a crazy moment."

Amaya, 18, is the youngest player in the draft, but his upside is such that he's expected to adapt well to the professional game, even in a central playmaking role that is usually the domain of foreign players.

The Seattle Sounders acquired defender Jonathan Campbell from the Chicago Fire for a fourth-round pick in the 2020 draft, both teams announced.

Campbell, 25, had one goal and two assists in 72 games (49 starts) over the past three seasons for the Fire. He had one assist in 15 matches (11 starts) in 2018.

"Jonathan is a young, talented player who we think can provide some depth for us heading into 2019," Sounders general manager Garth Lagerwey said in a news release. "We are looking forward to bringing...